Life Science Buffers

Balanced salt solutions and powders used for molecular, protein, nucleic acid, and cell biology applications including cell culture, electrophoresis, ELISA, and chromatography processes; available in a variety of formulations and grades.

Buffer solutions serve to keep pH (acidity or alkalinity) nearly constant in a variety of chemical and biological applications. For example, a bicarbonate buffer helps maintain the pH of blood, a buffered saline maintains cellular contents at a consistent pH level, and buffers help maintain a narrow pH range for enzymes to function correctly.

Most biological samples used in research are kept at a pH of about 7.4. Common biological buffers used for tissue culture include Dulbeccos phosphate buffered saline (PBS), Tris base, HEPES, MOPS, PIPES, and other formulations developed for specific cell lines or applications. Most buffers used in cell culture are also DNase-, RNase-, and protease-free.

The choice of buffer for a particular biological reaction or site depends on several factors:

Temperature
Desired or target pH
Buffer toxicity (to the system)
Buffer interactions with other system components

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211 – 225 of 3,503 results

211

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Thermo Scientific Chemicals CHES, 99%

CAS: 103-47-9 Molecular Formula: C8H17NO3S Molecular Weight (g/mol): 207.288 MDL Number: MFCD00003835 InChI Key: MKWKNSIESPFAQN-UHFFFAOYSA-N PubChem CID: 66898 IUPAC Name: 2-(cyclohexylamino)ethanesulfonic acid SMILES: C1CCC(CC1)NCCS(=O)(=O)O

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Specifications

PubChem CID	66898
CAS	103-47-9
Molecular Weight (g/mol)	207.288
MDL Number	MFCD00003835
SMILES	C1CCC(CC1)NCCS(=O)(=O)O
IUPAC Name	2-(cyclohexylamino)ethanesulfonic acid
InChI Key	MKWKNSIESPFAQN-UHFFFAOYSA-N
Molecular Formula	C8H17NO3S

212

Thermo Scientific Chemicals TRIS, 0.5M buffer soln., pH 8.5

CAS: 77-86-1 Molecular Formula: C4H11NO3 Molecular Weight (g/mol): 121.136 MDL Number: MFCD00004679 InChI Key: LENZDBCJOHFCAS-UHFFFAOYSA-N PubChem CID: 6503 ChEBI: CHEBI:9754 IUPAC Name: 2-amino-2-(hydroxymethyl)propane-1,3-diol SMILES: C(C(CO)(CO)N)O

Pricing & Availability
Specifications

PubChem CID	6503
CAS	77-86-1
Molecular Weight (g/mol)	121.136
ChEBI	CHEBI:9754
MDL Number	MFCD00004679
SMILES	C(C(CO)(CO)N)O
IUPAC Name	2-amino-2-(hydroxymethyl)propane-1,3-diol
InChI Key	LENZDBCJOHFCAS-UHFFFAOYSA-N
Molecular Formula	C4H11NO3

213

Thermo Scientific Chemicals HEPES, 1.0M buffer soln., pH 6.5

CAS: 7365-45-9 Molecular Formula: C8H18N2O4S Molecular Weight (g/mol): 238.30 MDL Number: MFCD00006158 InChI Key: JKMHFZQWWAIEOD-UHFFFAOYSA-N PubChem CID: 23831 ChEBI: CHEBI:42334 IUPAC Name: 2-[4-(2-hydroxyethyl)piperazin-1-yl]ethanesulfonic acid SMILES: OCCN1CCN(CCS(O)(=O)=O)CC1

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Specifications

PubChem CID	23831
CAS	7365-45-9
Molecular Weight (g/mol)	238.30
ChEBI	CHEBI:42334
MDL Number	MFCD00006158
SMILES	OCCN1CCN(CCS(O)(=O)=O)CC1
IUPAC Name	2-[4-(2-hydroxyethyl)piperazin-1-yl]ethanesulfonic acid
InChI Key	JKMHFZQWWAIEOD-UHFFFAOYSA-N
Molecular Formula	C8H18N2O4S

214

MP Biomedicals™ PBS 10X

PBS 10X, Rnase, Dnase, Protease free, Filtered through 0,2μm PTFE.

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215

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Thermo Scientific Chemicals EPPS, 99%, for biochemistry

CAS: 16052-06-5 Molecular Formula: C9H20N2O4S Molecular Weight (g/mol): 252.329 MDL Number: MFCD00006160 InChI Key: OWXMKDGYPWMGEB-UHFFFAOYSA-N Synonym: 3-[4-(2-Hydroxyethyl)-1-piperazine]propanesulfonic acid PubChem CID: 85255 ChEBI: CHEBI:42298 IUPAC Name: 3-[4-(2-hydroxyethyl)piperazin-1-yl]propane-1-sulfonic acid SMILES: C1CN(CCN1CCCS(=O)(=O)O)CCO

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Specifications

PubChem CID	85255
CAS	16052-06-5
Molecular Weight (g/mol)	252.329
ChEBI	CHEBI:42298
MDL Number	MFCD00006160
SMILES	C1CN(CCN1CCCS(=O)(=O)O)CCO
Synonym	3-[4-(2-Hydroxyethyl)-1-piperazine]propanesulfonic acid
IUPAC Name	3-[4-(2-hydroxyethyl)piperazin-1-yl]propane-1-sulfonic acid
InChI Key	OWXMKDGYPWMGEB-UHFFFAOYSA-N
Molecular Formula	C9H20N2O4S

216

MOPS, ≥98.5% (Dry Basis), Ultrapure

CAS: 1132-61-2 Molecular Formula: C7H15NO4S Molecular Weight (g/mol): 209.26 MDL Number: MFCD00006183 InChI Key: DVLFYONBTKHTER-UHFFFAOYSA-N Synonym: 3-[N-Morpholino]propane sulfonic Acid PubChem CID: 70807 ChEBI: CHEBI:44115 IUPAC Name: 3-morpholin-4-ylpropane-1-sulfonic acid SMILES: C1COCCN1CCCS(=O)(=O)O

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Specifications

PubChem CID	70807
CAS	1132-61-2
Molecular Weight (g/mol)	209.26
ChEBI	CHEBI:44115
MDL Number	MFCD00006183
SMILES	C1COCCN1CCCS(=O)(=O)O
Synonym	3-[N-Morpholino]propane sulfonic Acid
IUPAC Name	3-morpholin-4-ylpropane-1-sulfonic acid
InChI Key	DVLFYONBTKHTER-UHFFFAOYSA-N
Molecular Formula	C7H15NO4S

217

Thermo Scientific Chemicals TRIS-buffered saline (TBS, 10X) pH 7.6

Pricing & Availability
Specifications

PubChem CID	6503
CAS	77-86-1
Molecular Weight (g/mol)	121.136
ChEBI	CHEBI:9754
MDL Number	MFCD00004679
SMILES	C(C(CO)(CO)N)O
IUPAC Name	2-amino-2-(hydroxymethyl)propane-1,3-diol
InChI Key	LENZDBCJOHFCAS-UHFFFAOYSA-N
Molecular Formula	C4H11NO3

218

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Thermo Scientific Chemicals HEPES free acid, 99+%, for molecular biology, DNase, Rnase and Protease free

CAS: 7365-45-9 Molecular Formula: C8H18N2O4S Molecular Weight (g/mol): 238.30 MDL Number: MFCD00006158 InChI Key: JKMHFZQWWAIEOD-UHFFFAOYSA-N Synonym: 2-[4-(2-Hydroxyethyl)-1-piperazine]ethanesulfonic acid PubChem CID: 23831 ChEBI: CHEBI:42334 IUPAC Name: 2-[4-(2-hydroxyethyl)piperazin-1-yl]ethane-1-sulfonic acid SMILES: OCCN1CCN(CCS(O)(=O)=O)CC1

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Specifications

PubChem CID	23831
CAS	7365-45-9
Molecular Weight (g/mol)	238.30
ChEBI	CHEBI:42334
MDL Number	MFCD00006158
SMILES	OCCN1CCN(CCS(O)(=O)=O)CC1
Synonym	2-[4-(2-Hydroxyethyl)-1-piperazine]ethanesulfonic acid
IUPAC Name	2-[4-(2-hydroxyethyl)piperazin-1-yl]ethane-1-sulfonic acid
InChI Key	JKMHFZQWWAIEOD-UHFFFAOYSA-N
Molecular Formula	C8H18N2O4S

219

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Thermo Scientific Chemicals MOPS, 99.5%, for molecular biology, Dnase, Rnase, Prot. free, for peptide sequencing

CAS: 1132-61-2 Molecular Formula: C7H15NO4S Molecular Weight (g/mol): 209.26 MDL Number: MFCD00006183 InChI Key: DVLFYONBTKHTER-UHFFFAOYSA-N Synonym: 3-(N-Morpholino)propanesulfonic acid PubChem CID: 70807 ChEBI: CHEBI:44115 IUPAC Name: 3-morpholin-4-ylpropane-1-sulfonic acid SMILES: [O-]S(=O)(=O)CCC[NH+]1CCOCC1

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Specifications

PubChem CID	70807
CAS	1132-61-2
Molecular Weight (g/mol)	209.26
ChEBI	CHEBI:44115
MDL Number	MFCD00006183
SMILES	[O-]S(=O)(=O)CCC[NH+]1CCOCC1
Synonym	3-(N-Morpholino)propanesulfonic acid
IUPAC Name	3-morpholin-4-ylpropane-1-sulfonic acid
InChI Key	DVLFYONBTKHTER-UHFFFAOYSA-N
Molecular Formula	C7H15NO4S

220

Thermo Scientific Chemicals Phosphate-buffered saline (PBS, 5X), with EDTA

Helps to maintain a constant pH

Pricing & Availability
Specifications

Physical Form	Liquid
Chemical Name or Material	Phosphate Buffered Saline (PBS)
Recommended Storage	Ambient temperatures
Concentration	5 X

221

HEPES Free Acid, >99%, Molecular Biology Reagent, MP Biomedicals™

CAS: 7365-45-9 Molecular Formula: C8H18N2O4S Molecular Weight (g/mol): 238.30 MDL Number: MFCD00006158 InChI Key: JKMHFZQWWAIEOD-UHFFFAOYSA-N Synonym: N-2-Hydroxyethylpiperazine-N'-2-ethanesulfonic acid,N-(2-Hydroxyethyl)piperazine-N'-(2-ethanesulfonic acid) PubChem CID: 23831 ChEBI: CHEBI:42334 SMILES: OCCN1CCN(CCS(O)(=O)=O)CC1

Pricing & Availability
Specifications

PubChem CID	23831
CAS	7365-45-9
Molecular Weight (g/mol)	238.30
ChEBI	CHEBI:42334
MDL Number	MFCD00006158
SMILES	OCCN1CCN(CCS(O)(=O)=O)CC1
Synonym	N-2-Hydroxyethylpiperazine-N'-2-ethanesulfonic acid,N-(2-Hydroxyethyl)piperazine-N'-(2-ethanesulfonic acid)
InChI Key	JKMHFZQWWAIEOD-UHFFFAOYSA-N
Molecular Formula	C8H18N2O4S

222

Tris, MP Biomedicals™

CAS: 77-86-1 Molecular Formula: C4H11NO3 Molecular Weight (g/mol): 121.136 InChI Key: LENZDBCJOHFCAS-UHFFFAOYSA-N Synonym: 2-Amino-2-(hydroxymethyl)-1,3-propanediol, THAM, Tris base, Trometamol, Tromethamine, Tris-[hydroxymethyl]amino-methane PubChem CID: 6503 ChEBI: CHEBI:9754 IUPAC Name: 2-amino-2-(hydroxymethyl)propane-1,3-diol SMILES: C(C(CO)(CO)N)O

Pricing & Availability
Specifications

PubChem CID	6503
CAS	77-86-1
Molecular Weight (g/mol)	121.136
ChEBI	CHEBI:9754
SMILES	C(C(CO)(CO)N)O
Synonym	2-Amino-2-(hydroxymethyl)-1,3-propanediol, THAM, Tris base, Trometamol, Tromethamine, Tris-[hydroxymethyl]amino-methane
IUPAC Name	2-amino-2-(hydroxymethyl)propane-1,3-diol
InChI Key	LENZDBCJOHFCAS-UHFFFAOYSA-N
Molecular Formula	C4H11NO3

223

Imidazole, 0.5M buffer soln., pH 6.5, Thermo Scientific™

Pricing & Availability
Specifications

CAS	288-32-4
Molecular Weight (g/mol)	68.08
MDL Number	MFCD00005183
Physical Form	Liquid
pH	6.5
SMILES	N1C=CN=C1
Recommended Storage	Keep cold
Concentration	0.5 M
IUPAC Name	1H-imidazole
InChI Key	RAXXELZNTBOGNW-UHFFFAOYSA-N
Molecular Formula	C3H4N2

224

HEPES Sodium Salt, Cell Culture Reagent Grade, ≥98.0%, MP Biomedicals™

CAS: 75277-39-3 Molecular Formula: C8H17N2NaO4S Molecular Weight (g/mol): 260.28 MDL Number: MFCD00036463 InChI Key: RDZTWEVXRGYCFV-UHFFFAOYSA-M Synonym: 4-(2-Hydroxyethyl)piperazine-1-ethanesulfonic acid sodium salt,N-(2-Hydroxyethyl)piperazine-N-(2-ethanesulfonic acid) sodium salt PubChem CID: 2724248 ChEBI: CHEBI:46758 IUPAC Name: sodium 2-[4-(2-hydroxyethyl)piperazin-1-yl]ethane-1-sulfonate SMILES: [Na+].OCCN1CCN(CCS([O-])(=O)=O)CC1

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Specifications

PubChem CID	2724248
CAS	75277-39-3
Molecular Weight (g/mol)	260.28
ChEBI	CHEBI:46758
MDL Number	MFCD00036463
SMILES	[Na+].OCCN1CCN(CCS([O-])(=O)=O)CC1
Synonym	4-(2-Hydroxyethyl)piperazine-1-ethanesulfonic acid sodium salt,N-(2-Hydroxyethyl)piperazine-N-(2-ethanesulfonic acid) sodium salt
IUPAC Name	sodium 2-[4-(2-hydroxyethyl)piperazin-1-yl]ethane-1-sulfonate
InChI Key	RDZTWEVXRGYCFV-UHFFFAOYSA-M
Molecular Formula	C8H17N2NaO4S

225

TES sodium salt, Thermo Scientific Chemicals

CAS: 70331-82-7 Molecular Formula: C6H14NNaO6S Molecular Weight (g/mol): 251.23 MDL Number: MFCD00065482 InChI Key: GUXMFAHOYNRHBI-UHFFFAOYSA-M Synonym: 2-([Tris(hydroxymethyl)methyl]amino)ethane-1-sulfonic acid sodium salt PubChem CID: 23702152 IUPAC Name: sodium 2-{[1,3-dihydroxy-2-(hydroxymethyl)propan-2-yl]amino}ethane-1-sulfonate SMILES: [Na+].OCC(CO)(CO)NCCS([O-])(=O)=O

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Specifications

PubChem CID	23702152
CAS	70331-82-7
Molecular Weight (g/mol)	251.23
MDL Number	MFCD00065482
SMILES	[Na+].OCC(CO)(CO)NCCS([O-])(=O)=O
Synonym	2-([Tris(hydroxymethyl)methyl]amino)ethane-1-sulfonic acid sodium salt
IUPAC Name	sodium 2-{[1,3-dihydroxy-2-(hydroxymethyl)propan-2-yl]amino}ethane-1-sulfonate
InChI Key	GUXMFAHOYNRHBI-UHFFFAOYSA-M
Molecular Formula	C6H14NNaO6S

Life Science Buffers

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